— 2b — 

 ORDER: Salicaceae. (Willow Family.) 



Salix, Tonrn. ( Willow. Osier.) 



Salix humilis, Marshall. (Low Bush Willow.) Shrub 3 — 8 feet high, 

 varying much in size and appearance ; leaves petioled, obovate-lanceolate, 

 sometimes grayish-woolly beneath. 



Salix discolor, Mubl. ( Glaucous Willow.) A large shrub or small tree. 

 8 — 15 feet high ; leaves lanceolate or ovate-lanceolate irregularly toothed 

 on the sides, when old become smooth and glaucous beneath. 



Salix eriocephala, Michx. (Silky-headed Willow.) Resembles the 

 former in size ; growing in swamps and moist places. 



Salix sericea. Marshall. (Silky-leaved Willow.) Shrub 4 — 10 feet high ; 

 leaves lanceolate, pointed, downy above, grayish underneath, with short 

 silky hairs. Growing in poor, sandy soil. 



Salix alba, L. var. vitellina. ( White Willow.) A rapid growing tree, 

 attaining a height of 50 — 80 feet ; leaves lanceolate, toothed, clothed with 

 white, silky hairs, especially beneath. Branches yellow or light red. 



Salix fragilis, L. (Brittle Willow.) A tall and handsome tree ; leaves 

 lanceolate, smooth and glaucous beneath. 



Salix lucida, Muhl. (Shining Willow.) A beautiful specie, sometimes 

 becoming a small bushy tree of 12 — 15 feet high ; leaves ovate-oblong, 

 smooth and shining on both sides. Only few specimens found. 



Salix Babylonica, Tourn. (Weeping Willow.) Cultivated in the neigh- 

 borhood of private residences (All these Salix amounting to about 1200 

 specimens.) 



Populus, Tourn. (Poplar. Aspen.) 



Populus tremuloides, Michx. (American Aspen.) Tree 20 — 50 feet 

 high ; bark smooth, greenish- white. Leaves roundish heart-shaped, stalk 

 long, latteralty compressed, accounting for the continual agitation of the 

 foliage by the slightest braze. (About 500.) 



Populus grandidentata, Michx. (Large toothed Aspen.) A tree larger 

 than the previous; bark smoothish-gray. Leaves roundish-ovate, with 

 large and irregular sinuate teeth. (Scarce.) 



Populus heterophylla, L. (Downy-leaved Poplar.) A beautiful tree, 

 40 — 60 feet high, with large blunt leaves, heart-shaped, roundish-ovate. 

 Growing in moist soil. (Scarce.) 



Populus monilifsra, Ait. (Cotton-wood. Necklace Poplar.) A large 

 tf Ue , 80—100 feet high ; leaves broadly deltoid, truncate at the base. 

 (Scarce.) 



